Paper folder



FIG. 1 is a front perspective view of the novel paper folder showing my new design;

FIG. 2 is a front elevation view thereof and the rear elevation view is the reverse image thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a left end elevation view and the right end elevation view is a reverse image thereof. 

The ornamental design for a paper folder, as shown and described. 